5、冠词用在名词前，帮助说明其意义
冠词分为不定冠词a／an和定冠词the，放在名词前、a／3n用在单数可数名词前。
1.不定冠词
不定冠词的使用方法
①泛指类人或物。
eg.This is a pencil case.
SheS a doctor.
②指不具体的某个人或物。
eg.I met an old man On my way home.
③用在序数词前，等于another。
eg.Theres a third boy near the shop.
④表示每，等于every。
eg.They have music lessons twice1 a week.
⑤固定搭配。
a lot Of，a lot，a little，a few，a glass Of，such2 a／an， have a word with，have a look，have a try，have a swim，a quarter，half an hour， three times a day，have a talk，give a talk，ten Yuan a kilo3
不定冠词的地方
①不定冠词般放在所修饰的单数可数名词前。
eg，a bike，an egg
②当名词被such，what，many修饰时，不定冠词放在这类词之后。
eg.It took4 me half an hour to finish my homework.
He left in such a hurry that he forgot5 to close the door.
What a dangerous job it is!
Many a man has gone to the big cities for work.
③当名词前的形容词前有so，how，too等词时，不定冠词应放在形容词之后。
Eg. She was6 so nice a girl that she took theblind7 man to the station.
How nice a film this is!
④当名词前面有形容词和quite，rather8，very时，不定冠词放在quite，rather之后，very之前。
eg.It is quite a good book.
That is rather a useful9 too1.
This is a very interesting story
2.定冠词的使用方法表示上文中所提到过的人或物。
eg:l have two children，a boy and a girl.The boy's name is Mark10.The girls name is Penny11.
特指某人或物。
eg: The girl in a red dress comes from America.
指说话人和听话人都熟知的人或物。
eg: My shoes are under the bed.
用在形容最高级和部分比较级前。
eg Tom is the taller of the two boys.
用在序数词前。
eg Monday is the second day of a week.
yo用在世界上与众不同的事物前。
cg The moon moves round the earth12.
用在某些形容词前，表示类人或物。
therich，the poor，the deaf，the blind，the dead，the wounded
用在姓氏复数前，表示某某家人或某某夫妇。
eg.The Greens are having dinner at home.
用在乐器前。
eg.play the piano／guitar／violin／drums.
用于逢十的复数数词前，指某个世纪中的几十年代或人的大约年岁。
eg. In the 1970s，a highway13 was built14 to linkup the city with my hometown15.
I think he is in the thirties.
用在某些专有名词和习惯用语中。
the United16 Nations，the Great Wall，the Summer Palace17，the Palace Museum，in the end，in the day，in the middle Of，all the time，in the east，by the way，On the way tO，the...
the越越
3.不需要冠词的状况
名词前有指示代词this，that，these，those时不需要冠词。
eg.That girl is my friend.
名词前有物主代词my，your，his her，their等时不需要冠词。
eg.Lucy is her sister.
名词前有whose，which，SO[1ie，any，each，every等代词时不需要冠词。
eg.Which man is Mr Green?
Each student has a beautiful picture.
复数名词表示一类人或物时不需要冠词。
eg.Those young men are teachers，not students.
物质名词表示类型时不需要冠词。
eg.Snow is white.
抽象名词表示一般定义时不需要冠词。
eg.Does she like music?
在球类运动和棋类游戏前时不需要冠词。
eg.play basketball／soccer／chess
在三餐前不需要冠词。
eg.have breakfast／lunch／supper／dinner
在人名、地名、节假日、星期、月份前不需要。
egTina，China，Tiananmen Square，Beijing,University，New Years Day，Tuesday，January
在学科和节目名字前不需要冠词。
eg.My favorite18 is English.
在某些固定搭配中不需要冠词。
eg.at noon19， at work，at home，by bus, by air，On foot，from morning till20 night，at night，gO tO school，go to bed，at last
4.在有的词组中，用冠词和不需要冠词意思有较大不同。
in hospital；in the hospital
in prison；in the prison
at table；at the table
in front of；in the front of
go to college；go to the college
take place；take the place